Ninjago Facts on X: "831: Fire is the only element not to have received a spinner booster pack in 2012. This is because Kendo Kai got a full spinner in 9558 Training
LEGO NINJAGO 9561 KAI ZX - YouTube
LEGO Ninjago Kai ZX Minifigure with Armor 9441 9449 9561 Red Gold Ninja Genuine | eBay